Hi Guys
I operate a similar function to you SW and in the scenario you outline regarding meter cupboards on an escape route we would do as follows:
Ensure compart-mentation in the cupboard was good, i.e. seal around cables etc. passing through back, side walls etc.
Depending upon existing doors we may line them internally, or change them to be FD30s. We would fit a lock often a simple square budget lock, as we have found that we have less issues with tenants being locked out or leaving them open etc. and often get tenants locking up after others, It is very much about educating occupants and housing managers too. We will on occasion fit closers too if they were full size doors.
In regards to seals we would ensure that they had intumescent strips fitted rather than Combined with cold smoke brushes to allow any smoke out of the cupboard to activate the protected escape route smoke detectors.
I have added detection to cupboards but dependant upon the cupboard size, use and location etc.
Cheers
